Miles lookhart



l N|. LOCKHART.

Chimney Cowl.

y To all whom 'it-may concern l Be it known that LMILns LOCKHART, ofDouglas,

' gaat (eine.

MILES LocKnAnT, on DOUGLAS, ISLE orv MAN.

y Letters Patent No. 100,422, dated March 1, 1870. l

in the Isle-oi-Mam do hereby'declare the following statement to be afull andexact description of my invention for an' Improved means orApparatus for Ventilating, chiefly applicable to chimneys.

This, my said invention, consists in certain improve- `ments m apparatusfor Ventilating, chiefly applicable to chimneys, and has, forits objectthe more perfect Ventilating of chimneys, insuring up-draught,prelventing a down-draught, and rendering it next to impossible forchimneys so fitted to smoke.

This apparatus also can be used for other ventilating purposes.

In the cases of churches,theatersfsheds, dwellinghouses, or otherbuildings, it will be found of great service, 'as by its means allheated airl(\vhich naturally collects near the roof or ceiling of anyvbuilding or room) will he carried away. f

`It alsoapplies to Ventilating mine-shafts, tunnels,amllrailway-carriages, and Vto Ventilating purposes gen- `exa y.-

An ,apparatus constructed according to this my said invention consistsin a cowl or cup-shaped head, which has a vane attached to` the top,which vane always keeps the mouth of the cowl-orcup-shaped head facpingothe wind.

The cowl or cup-shaped head is supportedby means of 4a stay, to which isattached a rod, which rod dcscends down from the head, and sli-ips intoa pipe or 'tube which is attached to achimney-top or pipe which i risesfrom and is'iixed to the brick-work or masonry of the chimney.

The cowl orcnp-shaped head is made to Vship over l the chimney-top orpipe, andby means of the rod shipl pinginto the before-mentioned pipeortube, i's allowed to revolve round the chimney-pot or pipe accordingto the direction of the wind.

v To. the inside of the cowl or cup-shaped head is at-Y tached apipewhich descends a short distance into the chimney-pot or pipe. Thispiperevolves with the and at the back of the cowl or cup-shaped head isau opening or outlet for thesmoke.

` In cases of high buildings being near chimneys to which this cowl. orcup-shaped heald is fitted, or in mountainous districts itis preferredto fit this opening or smoke outletwith a guard formed of a series ofcircular, square, or otheishaped plates,h avingtheir center part cutaway and kept some small distance apart from each other, and terminatingin a solid plate, or 4a Venitian or other` guard may he used, as foundmost convenient in practice.

The Schedulerefen'ed to these Letters Patent and making` pari: of thecame In order that this invention may be more readily seen andunderstood, there are hereunto attached drawings which illustrate a cowlGroup-shaped head with pipes attached, as hereinhefore described.

Figure 1 is a sectional view of an apparatus according to my invention.

Figure 2 is aback view of same-.

Figure 3'is an outside view.

Figure 4 is an outside view of the cowl-shaped head or cup withoutguard, and shown with butter-ily wingt 'shaped vane.

Figures 5, 6, and 7 illustrate a guard to be used when required, ashereiubefore mentioned.

Like letters in each and every figure denote like parts.

Arrows denote the direction the wind takes. a`cowl or cup-shaped ihead.l b, vane which keeps the cowl or` cup-shaped hea .with its mouth oropen part facing the wind.

" c, pipe which is attached to cowl or cup-shaped head, and revolvestogether with it, and fits into d, a pipe which leads down the chimneyand terminates in an elbow dl, with a mouth, d on its top part.

e, stay, to which isattached f, rod which descends into g, pipe ortube-stay, which is attached to Il., chimney-pot or pipe, which is ixedonto the brickwork or masonry.

j, smoke-box. i

l, aperture or smoke-outlet.

m, guard.

f Figs. 5,6, and 'i',`a, part of cowl or cup-shaped head.

b b* b2 b, plates forming guard to be used as hereinbefore described,when required.

The action of this apparatus is as follows:

The cowl or cup-shaped head is kept with its mouth or openlpart facingthe wind by means of the vane b. The wind blows into the, mouth or openpart of the cowltheuce down the pipe" c,""attaached to the cowl', thencethrough pipe d, turning at the elbow dl, and blowing up the chimney andthereby causing an np-draught. It blows up t-he chimney, taking thesmoke or hot air with it into the smoke-box j it thence escapes into theopen air through the aperture l and guardfmI when Iitted.- l

The arrows indicate the direct-ion of the-wind, as just described. i

In cases of churches, theaters, sheds, dwellinghouses or otherbuildings, also in mine-shafts, tunnels, railway carriages and generalVentilating purposes, the

operation of the apparatus is similar to that hereinl,

tion, and I having now fully described and ascertained the object andpurposes of the same, together with the manner in which the same is tohe or may be performed or cam'ed out into practical e'eot, I wish it tobe distinctly understood that I do not confine myself to the severalproportions-and relative dimensions of lthe various parts of theconstruction, as it will be readily seen that the same may beconsiderably varied without departing from my invention; but

What I claim as new and my invention, is-

The combination of a cowl or other cup-shaped head, being kept with itsopen part or mouth facing the wind, and vhaving connected with it apipewhich leads down the chimney (ventilator in other cases) having anelbow'with a monthfacingupward at its end, and

this cowl or cup-shaped head revolving round the casing or chimney-top,(or Ventilating pipe) and the action of the several parts being for thepurposes laereinbefore described and set forth.

In witness whereof, I, the said MILES LOCKHART, have hereunto set myhand land axed my seal this 25th day of May, in the year of our Lord onethousand eight hundred and sixty-nine.Y

MILES LOGKHART. [1.. 8.] Witnesses:

F. J. OHEESBROUGB, I. H. llEDliafoNIn-li;`

Both of 43 Castle Street, Liverpool.

